I can't get variable to decrease by one

Questions & Answers
1

This is probably a very easy question to answer, but for some reason, I can’t figure out what is wrong. I want my int showAd to decrease by one every time the Canvas1 is enabled. Here is code:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using GoogleMobileAds.Api;

public class AdManager : MonoBehaviour {

	//public bool dead;
	public int showAd = 3;
	public InterstitialAd interstitial;
	public BannerView bannerView;
	public bool canShowInt;

	void Start () {
		RequestBanner ();
		RequestInterstitial ();
	}

	void Awake () {
		DontDestroyOnLoad (this);
	}

	void Update () {
		if (GameObject.Find ("Canvas1").GetComponent <Canvas> ().enabled == true) {
			canShowInt = true;
		} else {
			canShowInt = false;
		}
		if (showAd == 0) {
			showAd = 3;
		}
	}


	void ShowInterstitial () {
		if (canShowInt == true) {
			showAd = showAd - 1;
			if (showAd == 0) {
				if (interstitial.IsLoaded ()) {
					interstitial.Show ();
					interstitial.Destroy ();
				}
			}
		}
	}
2

On your update function, you don’t have anything calling

void ShowInterstitial ()

where your showAd is being decremented. Just add a condition that will call your ShowInterstitial function.